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Relative Permittivity and Refractive Index



Michael R. Moldover, K N. Marsh, J M. Barthel, R Buchner


Measurements of the relative electric permittivity (dielectric constant or relative permittivity) e(p,T) and refractive index of fluids n(p,T) as a function of the pressure and the temperature can be used to determine a wide range of thermodynamic properties. The electrical conductivity of the fluid is a key factor in determining the frequency of the measurements, which in turn determines the geometry of the sample container and the instrumentation. The measurement of the relative permittivity of non-electrolytes is described in Section 1. Experimental techniques for refractive index are given in Section 2 while Section 3 describes the measurement of both refractive index and relative permittivity of electrolytes.
Measurement of the Thermodynamic Properties of Single Phases
Publisher Info
Elsevier Science, Amsterdam, -1


capacitors, dielectric constant, electrolytes, index of refraction, refractive index, relative permittivities, thermophysical properties of fluids


Moldover, M. , Marsh, K. , Barthel, J. and Buchner, R. (2003), Relative Permittivity and Refractive Index, Elsevier Science, Amsterdam, -1 (Accessed May 26, 2024)


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Created March 28, 2003, Updated February 19, 2017